Epic S7527: Market Leading Flexible Polyurethane Featuring 150C RTI Rating

Challenging the High Temperature Limits of Polyurethane Technology

Epic S7527 is a two-component polyurethane potting compound formulated for applications requiring thermal stability at high temperatures. S7527 carries a UL 94V-0 flame rating and a 150°C RTI rating per UL 746. Epic S7527 is excellent for potting and encapsulating sensitive electronics which will be exposed to harsh environments. Epic S7527 features many process and application friendly properties such as:


  • UL 94V-0 flame rating
  • A premium RTI rating of 150°C
  • Superior HAI, HWI, & CTI Ratings (UL 746)
  • Low mixed viscosity for superior flow into tight tolerance areas
  • Good thermal conductivity
  • Low weight loss at elevated temperatures
  • Outstanding adhesion to various metal & plastic substitutes
  • RoHS compliant
  • Excellent moisture resistance
  • Exceptional balance of physical strength properties


  • Outdoor LED displays
  • Universal reader for security systems
  • Radio frequency transmitting devices
  • Sensor & control module potting
  • Pool & spa electronics potting
  • Power supplies, energy storage devices, & battery packs
  • Automotive applications
UL94V-0 flame rated automotive potting
Waterproof LED potting RTI rated to 150°C
UL94V-0 flame rated RF device potting
Waterproof spa potting RTI rated to 150°C

How Does Epic S7527 Compare Against Silicones?

While silicone potting compounds have some advantages, Epic S7527 offers a much wider scope across applications. The main advantage of silicone potting compounds is the material’s elevated thermal resistance (over 160°C) while offering a soft polymer. It should be noted that the thermal range of Epic S7527 can easily handle the operating temperatures of many industrial electronics, and its lower cost offers a better option for a wider range of applications.

Epic Resins has decades of experience in specialty epoxy and polyurethane resins. Our professional staff uses superior customer service to work with clients to solidify their manufacturing production process. Our expertise provides clients the ability to maximize proactive product development and supply consistency to achieve maximum value.

S7527 offers many advantages over flame-retardant silicones, including:

  • More economical polymer: lower cost of raw materials and application processes
  • Lower water vapor permeability: offers better protection of sensitive components against water migration causing corrosion
  • Reduced outgassing: utilizing different raw materials resulting in lower outgassing
  • Better bond strength: dependable adhesion to substrates and casings
  • Improved physical attributes: higher strength; elongation and abrasion resistance
  • Better chemical resistance: stands up to exposure to more chemical compounds
  • Versatile processing advantages: customers can choose from various gel time versions that will fit their specific production requirements

Get the Specs or Place an Order for Epic S7527 High-Temp Polyurethane